Merge remote-tracking branch 'origin/develop' into settings-changed

* origin/develop: (306 commits)
  fallback if shadows aren't defined
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1 files changed, 7 insertions, 0 deletions

diff --git a/src/components/chat/chat_layout_utils.js b/src/components/chat/chat_layout_utils.js
index 609dc0c9..50a933ac 100644
--- a/src/components/chat/chat_layout_utils.js
+++ b/src/components/chat/chat_layout_utils.js
@@ -24,3 +24,10 @@ export const isBottomedOut = (el, offset = 0) => {
 export const scrollableContainerHeight = (inner, header, footer) => {
   return inner.offsetHeight - header.clientHeight - footer.clientHeight
 }
+
+// Returns whether or not the scrollbar is visible.
+export const isScrollable = (el) => {
+  if (!el) return
+
+  return el.scrollHeight > el.clientHeight
+}